Ice-cream-carton filler



Aug. 10 1926.

` B. L. HUNTLEY ICE CREAM CARTO FILLER Filed Sept. 10 I Patented Aug. 10, 1926,..

g 1,595,661@ Y PATENT oFFicE.

BURTON I.. HUNTLEY, or MINNEAPOLIS, MINNESOTA, ASSIGNOR, EY, DIRECT AND MESNE ASSIGNMENTS, To KREAMI'AK CARTON co., 0E MINNEAPOLIS, MINNESOTA,

A CORPORATION OF DELAWARE.

lICE-CRE':AM CARTON EILLER. Y.

I 'Application led September 10,'1925;v Serial No.k 55,517.

My present invention relates to that vgeneral type of ice cream carton fillers disclosed and claimed in'my application forLetters '5 19,83% filed April l, 1925, and entitled Ice cream carton 1illers,7 but is not limited to the particular construction illustratedl in said apv plication. In ice cream carton fillers involving cylindrical 'casings that are vinsertable into the body of ice cream to'fill cartons, a y

great deal of difficulty has been experienced in removing the carton from the cylindrical casing after the carton has been filled' with ice cream. After very considerable experiment, I have discovered a remedy for the above defect. I have found that in the operation of filling the carton with cream, the carton will be expanded into tight or close engagement with the cylindrical shell of the carton filler, So that partial vacuum will be produced between the carton and the metallic shell and such partial vacuum will cause the filled carton to be tightly held in the shell. I have further found that, by providing the metallic shell of the carton liller in its cylindrical surface with a large number of Small air passages, the partial vacuum will be released and the filled carton may be readily removed from the metallic shell. This, while a very simple expedient, has removed a very serious obstacle in the use of icecream carton fillers.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings Fig. l is a perspective showing an ice cream carton filler designed in accordance with or embodying my present invention;

Fig. 2 is a horizontal section taken on the line 2 2 of Fig. l;

Fig. 3 is a horizontal section on the line 3 3 of Fig. l, the carton being removed;

Fig. l is an axial Section of the cylindrical shell of the carton filler; and l Fig. 5 is a fragmentary section on the line l5 5 of Fig. l.

The character A indicates a cylindrical paper carton adapted to be filled with ice cream. This paper carton is arranged to be placed within a cylindrical metal shell 3, which, at its upper end, is arranged to be interlocked to the depending annular iange of a cylinder head 4, by means of bayonet oir-m55; The Cylindre 4 isprtviaed with an axial stem 6 provided at its upper end 'with a cross-bar 7.l Y Patent of the United States, Serial Number y when the Cylinderhead is removed, the carton A is adapted to be inserted into the cylindrical casing 3 with its upper end prof-l jecting abovethe same and with its lower end resting on an `annular stop-flange or ,shoulder 8 formed by lthe upper and inner portion of a ktoothed band 9. The teeth of the bandl 9 are given a f'setf some radially inwardand soine radially oiiti'ivard.V The iceV cream carton' filler, "s far just described in detail, is that of the `S"tr"ucture` disclosed and claimed in my prior application above identified; but it will be understood that, so far as this invention is concerned, the iiller may be of any type wherein a cylindrical or approximately cylindrical metal shell is employed as a container for a carton to be filled with ice cream.

As above indicated, the salient feature of this invention consists in providing the cylindrical shell 8, (or similar shell used for the purpose of filling ice cream cartons with ice cream or other plastic material), with a multiplicity of aireventing passages. The air-venting passages may be circumferentially and longitudinally spaced air-venting ports or holes, or they vmay be longitudinal internal grooves; and in the drawings, I have shown both species of said air-venting passages.

The. air holes or relief ports should be i located close enough together to admit air to all of the surface contact between the carton and shell or to completely break up .the partial vacuum that may exist between the carton and shell.` The longitudinal internal grooves l0a probably serve the venting purpose better than the holes, but both may be used together to advantage, although plied to the shell 3 and interlocke'd theretoV by the bayonet joints 5, be held against back lash or rotary motion in respect to the said shell, and this I accomplish in a simple manner by the use of a small lock lever or element 14, which, as shown, is pivoted to the head 4 and is provided at its tree end with' an oll'set nose or portion 15,

which, under spring tension rom said lever,

will "be yieldingly held in the space between the lug and the slot or the bayonet joint, as shown in Figs. 1 and 5. The outturned free end 16 ofthe lock lever 14 permits the Y same to be sprung laterally into an inoperativeV or releasing position when 1t 1s desired to remove the head from the shell.

Vhat Iclaim is 1. A carton iller comprising `a substantially cylindrical shell having a multiplicity of small air-venting ports leading from the inner surface thereof for breaking up partial vacuum existing between the carton and the surrounding shell, the greater part of the interior of said'shell being intact so that it maintains the form of the carton under pressure and prevents the same from being 'orced into said air vents. A

2. The structure defined in claim 1 in which said small air vents are in the form' of narrow circumterentially spaced longitudinally extended air-venting channels.

3. A carton filler comprising a substantia1- ly cylindrical shell having a head detachably connected thereto by bayonet joints, and a lock in the form of a 4resilient, lever Alio pivoted to said headrand having an of'set free end' insertable into the space between the lug and opposing Waller the slot of said bayonet joint to hold the said jointk interlocked,

In testimony whereof I al'hx my signature.

BURTON L. HUNTLEY. 

